Pigment.



' Y UNITED s'rArEs PATENT OFFICE. 1

noursiznAivenxor MANNHEI GERMANY, ASSIGNOR T0 BADISCHE ANILIN,& SODA FABRIK, or LUDWIGSHAFEN-ON-THE-RHINE, GERMANY, A-CORPORATION.

PIGMENT.

No Drawing.

I T 0 all whom it may concern.

Be it known that I, LOUIS BLANGEY, citiheim, (jrermany, have invented new and useful Improvements in Plgments, of which the following 1s a specification.

My invention consists in a new compositlon of matter suitable for use as plgments or lakes.

I have discovered that compounds con-- taming the general group1ng:-

v \NO: in which R is a poly-atomic group containing oxygen and containing less thanfl atoms,

when mixed with a metal compound as substratum, such for instance, as alumina, blanc fixe, China clay, heavy spar or the like, yield valuable pigments or lakes possessing clear yellow shades, good -eoloring power and excellent fastness against the ac- "tion of Water, lime and alcohol. Moreover,

they do not .sublime and are with but few exceptions, completely insoluble in oil. They also possess excellent fastnessagainst the action of light, and can be used for a great variety of purposes, for instance, for coloring paper or as oil paints, or for ordinary printing, or as lithographic colors.

7 As instances of compounds Which are suitable for use according to my invention, I mention nitro-amino-benzophenone, nitroamino-sulfobenzid, and derivatives of these compounds, substitutedin either or both of the benzene rings, for instance, 3.3-dinitro 4A-diamino-sulfobenzid, diamino-benzophenone, 3.3-dinitro-4:-chlor- 4 amino benzophenone, 3.3 dinitro 4 amino 4 chlorsulfobenzid, 3.3- dinitro 4- amino-benzo-phenone, 3.4'-dinitro-4c-aminobenzophenone, 3-nitro-4-amino-4=-methoxybenzophenone, 3-nitro-4-amino-4'-ch1orbenzophenone, and 3-nitro-4-amino-2A!-dichlorbenzophenone.

The manufacture of the said pigments can be effected in various Ways; for instance, the benz oplfenone derivative, or sulfobenzid derivative can be mixed either in the dry state or in the form-of paste (obtainable, for instance, by precipitation from sulfuric acid solution by means of cold Water and Washing free from. sulfuric acid) with the I Specification'of Letters Patent. I

substratum, then filtered and dried and finished off as may be necessary.

The following examples will serve to illus- 'trate further the nature of this invention, which, however, is not confined to these eX-' amples. The parts are byweight.

Example 1Pigment for I lithographic purposes and three-color printing.--Take anaqueous paste containing 5 parts of 3.3 din1t'ro-4AL diamin o-sulfobenzid i Nog (see Ullmann and Korselt, Bem'chte 40,646),

and stir the said paste into 100 parts of a Vork up together .100 parts of heavy spar and a paste containing 5 parts of amixture of 3.3-dinitro-4c.4c diamino-benzophenone and 3.3-dinitroA-chlor-t-amino-benzophenone, which mixture can be obtained, for instance, by the action, under mild conditions, of ammonia on 3.3-dinitro-4.4 dichlorbenzophenone.

Example 3-Pgment for printing on paper.-Stir together 1 0 parts of aluminium sulfate, 20 parts of heavy spar and a paste containing 5 parts of 3.3-dinitro-4.'-diamino-benzophenone and then add 5 parts of sodium carbonate.

The compounds Which are used for the purpose of this invention can generally be obtained by heating the corresponding chlorin derivatives with ammonia, thus replacing the chlorin by NH,.

Now What I claim is 1. The new composition of matter containing a metal compound as substratum and a compound possessing a grouping corresponding to the formula in which R is a polyatomic group containing Patented Jan. 4., 1916. Application filed February 26, 1914. Serial No. 521,205.

10W shade, possessing good coloring power and being fast against-the action of Water,

lime, alcohol and light.

The new' composition of matter containing 3.3-dinitro-4.4-diamino-sulfobenzid and aluminium hydrate, adapted for use as a pigment, having a yellow shade, posmaeoe sessing good coloring power and being fast against the action of Water, lime, alcohol and light.

In testimony whereof I have hereunto set 1 my hand in the presence of tvo subscribing Witnesses.

Louis BLANGEY.

Witnesses:

J. Auto. LLoYn, S. S. BERGER.

Gopzles of this patent may be obtained for'five cents each, by addressing the Commissioner of Patents,

' Washington, D. 0. 

